<html>

<head>
    <meta charset="utf-8">
<link rel="stylesheet" href="calc.css">
<script src="calc.js"></script>
</head>

<body>
    <table id="calc" onclick="calculater()">
        <tr>
            <td id="ioput" colspan="5">0</td>
        </tr>
        <tr>
            <td>1</td>
            <td>2</td>
            <td>3</td>
            <td>+</td>
            <td>C</td>
        </tr>
        <tr>
            <td>4</td>
            <td>5</td>
            <td>6</td>
            <td>-</td>
            <td rowspan="3" onclick="resultcalc()">=</td>
        </tr>
        <tr>
            <td>7</td>
            <td>8</td>
            <td>9</td>
            <td>*</td>
        </tr>
        <tr>
            <td>+/-</td>
            <td>0</td>
            <td>.</td>
            <td>/</td>

        </tr>
    </table>
</body>

</html>